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Full solar spectrum driving cryptomelane nanorod catalyst, and preparation method and applications thereof

A technology of cryptopotassium manganese ore and sunlight, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low photocatalytic stability, less VOCs, light The catalytic efficiency is not high, and the effect of simple process, reduced production cost and mild reaction conditions is achieved

Inactive Publication Date: 2013-10-02
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned photocatalysts are mainly used to catalyze the purification of liquid-phase organic pollutants such as dyes, and the catalytic efficiency of visible light is not high, and the photocatalytic stability is low, which cannot meet the actual needs.
There are few research reports and invention patents on visible light catalytic purification of VOCs; so far, there is no report on infrared photocatalysis

Method used

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  • Full solar spectrum driving cryptomelane nanorod catalyst, and preparation method and applications thereof
  • Full solar spectrum driving cryptomelane nanorod catalyst, and preparation method and applications thereof
  • Full solar spectrum driving cryptomelane nanorod catalyst, and preparation method and applications thereof

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Effect test

Embodiment 1

[0030] The preparation method of full-spectrum sunlight-driven cryptomelane (OMS-2) nanorod catalyst of the present invention is as follows:

[0031] (1) Weigh 0.01molMn(NO 3 ) 2 ·3H 2 O and 0.02mol KMnO 4 , successively added to a beaker with 100ml of water, and magnetically stirred to obtain Mn(NO 3 ) 2 ·3H 2 O and KMnO4 mixture;

[0032] (2) Transfer the mixed solution to a 100ml stainless steel reaction kettle with a polytetrafluoroethylene liner, seal it, place it in an oven, and let it react at 70°C for 24 hours;

[0033] (3) After the reaction is completed, the mixed solution is cooled to room temperature, and the precipitate in the beaker is taken out, filtered, washed, and dried to obtain the OMS-2 (A) nanorod catalyst.

Embodiment 2

[0035] The specific experimental procedure of Example 2 is basically the same as that of Example 1, except that the mixed solution was reacted at 90°C for 24 hours. After the reaction was completed, the mixed solution was cooled to room temperature, and the precipitate in the beaker was taken out for filtration, washed, and dried. , to obtain OMS-2(B) nanorod catalysts.

Embodiment 3

[0037] The specific experimental procedure of Example 3 is basically the same as that of Example 1, except that the mixed solution was reacted at 180°C for 24 hours. After the reaction was completed, the mixed solution was cooled to room temperature, and the precipitate in the beaker was taken out for filtration, washed, and dried. , to obtain OMS-2(C) nanorod catalysts.

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Abstract

The invention relates to a full solar spectrum driving cryptomelane nanorod catalyst, and a preparation method and applications thereof. The preparation method comprises following steps: 1) adding 0.01mol of a Mn (II) salt and 0.02mol of KMnO4 into a beaker which is filled with water, and magnetically stirring the mixture so as to obtain a mixed solution of the Mn (II) salt and KMnO4; 2) transforming the mixed solution into a stainless steel reaction vessel, sealing the reaction vessel, and performing hydrothermal oxidation reduction reaction; and 3) when the reaction is complete and the reaction vessel cools to a room temperature, taking sediment out of a Teflon inner container of the stainless steel reaction vessel, and filtering, washing and drying the sediment so as to obtain the full solar spectrum driving cryptomelane nanorod catalyst. Beneficial effects of the invention are that: 1) the OMS-2 nanorod catalyst possesses strong absorption capabilities in ultraviolet light, visible light and infrared light wave bands, and high catalytic activity and stability of ultraviolet light, visible light and infrared light-induced thermo-catalytic degradation of VOCs; and 2) reaction conditions are mild, and technologies are simple.

Description

technical field [0001] The invention relates to a full-spectrum sunlight-driven cryptokalnite nanorod catalyst and a preparation method and application thereof. Background technique [0002] Volatile organic pollutants, such as: benzene, toluene, acetone, etc. are the main atmospheric and indoor air pollutants. The large discharge of such organic compounds not only endangers human health, but also causes serious pollution to the environment. At present, common VOCs treatment technologies include adsorption, catalytic oxidation, and photocatalysis. Among them, the adsorption technology using activated carbon or molecular sieve as the adsorbent is limited by the adsorption capacity, and the adsorbent needs to be regenerated. The catalytic activity is high, but the price is expensive, which greatly limits the wide-scale application of adsorption technology and noble metal-based catalytic oxidation technology in VOCs treatment. The photocatalytic purification technology using s...

Claims

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Application Information

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IPC IPC(8): B01J23/34B01D53/86B01D53/72
Inventor 李远志毛明杨侯静涛程蕾赵修建
Owner WUHAN UNIV OF TECH
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